The Healthcare Cost and Utilization Project (HCUP) released three nationwide databases, the 2017 Nationwide Readmissions Database (NRD), the Nationwide Emergency Department Sample (NEDS), and the Nationwide Ambulatory Surgery Sample (NASS).
The NRD is designed to generate national estimates of readmissions, includes discharges for patients with and without repeat hospital visits and those who have died in the hospital.
The NEDS is the largest all-payer emergency department (ED) database in the United States that is publicly available. It enables the analysis of ED utilization patterns.
The NASS is constructed from the State Ambulatory Surgery Databases (SASD) and tracks information about major ambulatory surgery encounters in over 2,700 hospital-owned facilities across the United States. It provides information on patient characteristics, clinical diagnostic and surgical procedure codes, disposition of patients, total charges, expected source of payment, and facility characteristics.